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AMO 2024 Junior College (Grade 11–12) Question 1

AMO · AMO 2024 Junior College (Grade 11–12)

Question 1

How many real solutions does $x^9+2x^7+3x^5+9x^3=0$ have?

Question illustration
  1. 0
  2. 1
  3. 7
  4. 9